1. Department of Clinical and Experimental Medicine Linköping University Linköping Sweden
2. Department of Anaesthesia and Intensive Care Linköping University Hospital Linköping Sweden
3. Department of Medical and Health Sciences Linköping University Linköping Sweden
4. Department of Hand and Plastic Surgery and Intensive Care Linköping University Hospital Linköping Sweden
5. Division of Health Care Analysis Linköping University Linköping Sweden